Technical data
6.1 General technical data
RS 485 Repeater
Manual, 02/2011, A5E03382072-01
35
6.1.5 Specification of dielectric tests, protection class, degree of protection, and rated
voltage of S7-300
Test voltage
Proof of dielectric strength must be provided in the type test at a test voltage to IEC 61131-2:
Circuits with rated voltage V
e
to other circuits
or ground.
Test voltage
< 50 V 500 VDC
< 150 V 2500 VDC
< 250 V 4000 VDC
Protection class
Protection class I to IEC 60536, i.e., a protective conductor must be connected to the
mounting rail!
Protection against the ingress of foreign matter and water
ā Degree of protection IP 20 according to IEC 60529, i.e., protection against contact with
standard probes.
No protection against the ingress of water.
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